Double-sealed gasket for hydraulic shock absorber for use in self-closers in furniture
Inactive Publication Date: 2019-01-24
IND AUXILIARES
View PDF11 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The patent is about a new gasket for furniture shock absorbers that has two seals, one for the external body and one for the shaft. The gasket also includes compensators to adjust for the space taken up by the shaft. The invention is important because it solves the problem of small shock absorber sizes and complex configurations.
Problems solved by technology
However, this type of solution gives rise to various problems given that the shock absorber is actuated a certain number of times. On the one hand, these compensating sponges or cushions act as air bags that compensate for the volume of the shaft by compressing the air they contain.
The continuous compression-expansion cycles cause these cells to open and allow the air to escape, thus creating air bubbles that may cause deterioration in the operation of the shock absorber and undesired noise during operation.
On the other hand, when the sponge is at maximum compression, an internal pressure is generated in the shock absorber that again tries to displace the axis of the shock absorber towards the outside, thus generating undesired effort due to this residual pressure contained in the sponge.
Additionally, when the acceleration is high during the extraction of the shaft, the oil flows inside the shock absorber cause the sponge to move towards the area of the piston, which causes the extraction of the piston to be stopped.
This means that the watertightness of the seal is of greater importance due to the resultant wear.
Furthermore, the spring has the undesired effect of generating residual pressure, which, as with sponges, displaces the shaft towards the outside.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0006]Against this background, this invention concerns a double-sealed compensating gasket for hydraulic shock absorbers that can be used in self-closers for furniture, wherein, in the double-sealed compensating gasket between the external body seal end and the shaft seal end, there is substantial axial longitudinal separation or spacing, thus forming an elastic spaced area that is coaxial and positioned on the shaft of the shock absorber, and, one side, is an annular fluid compensation chamber, and, on the other, an air chamber.
[0007]Due to this configuration, the volume of the shaft submerged in the fluid (generally oil) is compensated during the insertion of the shaft into the body of the shock absorber, thus also reducing the number of elements necessary in order to carry out this task. The displaced fluid volume is container in the annular fluid compensation chamber and the inside of the cylindrical shock absorber body, thus substantially reducing the volume of the annular flui...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
Double-sealed compensating gasket for hydraulic shock absorbers for use in self-closers in furniture, of the type in which each end seals the internal cylindrical body of the shock absorber and the respective other end seals the shaft of the shock absorber, wherein, in the double-sealed compensating gasket (10), there is substantial axial longitudinal separation or spacing (13) between the seal end (10a) of the internal body and the seal end (10b) of the shaft, thus forming an elastic spaced zone (11) coaxial to and on the shaft (5) of the shock absorber, constituting on the one side an annular fluid compensation chamber (11a), and, on the other, an air chamber (11b).
Description
SUBJECT-MATTER OF THE INVENTION[0001]In self-closers for furniture, shock absorbers are used, and this invention concerns a double-sealed gasket for hydraulic shock absorbers of the type used in shock absorbers for double sealing of the passage of liquid, on one side or end, the external body seal, and, on the other side or end, the shaft seal, and these shock absorbers further include shaft volume compensators due to the volume occupied by the shaft inside the shock absorber body.[0002]It is important to take into account that, due to the small dimensions of these shock absorbers, it is critical to use more complex configurations.PRIOR ART[0003]Currently, and as a reference to the prior art, it is common and known to use double-sealing gaskets in shock absorbers. These gaskets prevent liquid exiting the internal chamber of the cylinder of the shock absorber both on the end of the body and on that of the shaft, and incorporate various systems to compensate the volume of liquid displ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): F16F9/36F16F9/06
CPCF16F9/362F16F9/06F16F2230/30E05F5/02E05F5/10
InventorRIOJA IRIBARREN, LUIS MARIA
OwnerIND AUXILIARES